1. Department of Materials Science and Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
2. Department of Periodontology, School of Dentistry, Kyungpook National University, 2177 Dalgubeol-daero, Jung-Gu, Daegu 41940, Republic of Korea
3. Advanced Materials Division, Korea Research Institute of Chemical Technology, 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea